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Old 09-18-2016, 11:48 AM   #1
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CO Sensor/alarm

Hello. I have a 2013 A122S, we bought it used and took it out for the first time. We were dry camping and had the propane turned on for the fridge and the stove. The CO Sensor/alarm kept going off to the point I had to pull the fuse. There is no evidence of a propane leak and I have no idea why the alarm goes off.

Any thoughts?

Thanks
Harvey
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Old 09-18-2016, 04:39 PM   #2
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CO sensors require a certain amount of voltage to ensure they are working properly , or else they will go off for no logical reason....this is a safety issue, your battery is too low to sustain the load....therefore the alarm goes off
Your battery ..needs to be on charged all the time and most definately replaced.
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Old 09-18-2016, 06:54 PM   #3
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Hello....

Yes, if the battery is low, it will start to sound off with a slow steady beep. We were in the Smoky's last year, and it would go off, usually at 2 in the morning. Would pull fuse till we could turn on the generator to charge it up again. A212.

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Old 09-18-2016, 07:22 PM   #4
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Might be time to replace it if the problems continues. They usually last a little longer but it looks to be in the 5 year range. My TT is a year older and I had to exchange out the alarm about 6 months ago.
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Old 09-18-2016, 07:30 PM   #5
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Also check the battery. If the battery was not properly cared for or improperly stored ( by previous owner) it could be damaged and not capable of holding a full charge. I would not sleep in an RV without a CO/Propane detector.
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Old 09-20-2016, 07:01 PM   #6
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Thanks for the replies/information, I think the battery is weak. Will have that tested first.
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Old 09-22-2016, 10:57 AM   #7
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Quote:
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Thanks for the replies/information, I think the battery is weak. Will have that tested first.
Mine started going off on my last trip and I also found that the battery was low and now 3 weeks later my battery will not hold a charge and I am replacing it today.
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Old 09-24-2016, 01:07 PM   #8
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I installed a new battery a few days ago and it fixed my alarm going off!
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Old 10-08-2016, 01:16 PM   #9
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I have recently been getting what I think are false alarms, but I don't think it's due to low battery, because the sequence of lights and beeps from the alarm suggest it is a propane leak. I doubt that is the case, because I smell none of the characteristic odor. If the problem is low voltage, it could be because I seem to have a problem with one of the fuse terminals so it loses contact sometimes. Dealer is going to check it all out along with some other things, so I'll wait and see.

Has anyone else with a perceived low voltage problem looked at the light and beep sequence compared to what is in the instruction manual?
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Old 10-08-2016, 06:39 PM   #10
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I have recently been getting what I think are false alarms, but I don't think it's due to low battery, because the sequence of lights and beeps from the alarm suggest it is a propane leak. I doubt that is the case, because I smell none of the characteristic odor. If the problem is low voltage, it could be because I seem to have a problem with one of the fuse terminals so it loses contact sometimes. Dealer is going to check it all out along with some other things, so I'll wait and see.

Has anyone else with a perceived low voltage problem looked at the light and beep sequence compared to what is in the instruction manual?
I've had 2 false alarms in 3 year's use of the camper.

One was when I started the hot water heater for the 1st time. Another A-frame owner said he had the same issue, but it never returned. The same is true for me - starting the hot water heater has never caused a repeat.

The 2nd false alarm occurred this summer. I don't know whether it was low voltage or something else. I hadn't yet plugged in and switched to AC on the fridge. After numerous resets (after plugging in), it went away. I didn't get a chance to measure voltage, as my wife was freaking with a thunderstorm starting up around us. I am installing a voltmeter on the microwave cabinet wall so I can check in situations like that.

When the A-frame was new, we had an external propane leak. The leak was from the metal casting where the hose from the regulator joined the metal pipe that runs under the trailer. The mechanic showed me the internal flaw in the casting that allowed the leak. We had smelled the leak (outside the camper), but it never set off the alarm.

The 5 year end of life on my alarm is marked as Sept 2018 - for a 2014 camper we took delivery on in April 2014. I guess 7 months before delivery really isn't too bad.

Fred W
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